CN208556014U

CN208556014U - A kind of automobile pump core part oil bath processing cutter

Info

Publication number: CN208556014U
Application number: CN201821049951.8U
Authority: CN
Inventors: 李罡
Original assignee: NANJING JINGCHENG SANGUO MACHINERY ELECTRONIC CO Ltd
Current assignee: NANJING JINGCHENG SANGUO MACHINERY ELECTRONIC CO Ltd
Priority date: 2018-07-04
Filing date: 2018-07-04
Publication date: 2019-03-01
Anticipated expiration: 2028-07-04

Abstract

The utility model discloses a kind of automobile pump core part oil bath processing cutters, and including the cutter head and hard alloy knife bar being welded and fixed, the cutter head is PKD blade, match with the oil groove shape of cutting to be processed, prepare oil groove for rotary cutting processing；The PKD blade is successively made of planar section, 1/4 arc section and chamfering section from bottom to end, wherein, 1/4 arc section is cut in outside the planar section, the sum of chamfering length of the radius of 1/4 arc section and the chamfering section is equal to the cutting depth of oil groove, and the chamfering section is inner chamfer setting, chamfering is 30 °~60 °.After oil groove processes, trough rim and upper surface are seamlessly transitted, and have maximally reduced the adverse effect in anodization, improve properties of product requirement.

Description

A kind of automobile pump core part oil bath processing cutter

Technical field

The utility model belongs to technical field of mechanical processing, and in particular to a kind of autombile fuel-oil pump core, more particularly to it is a kind of Automobile pump core part oil bath processing cutter.

Background technique

There is oil groove on fuel pump core shell and cover board, currently, oil groove forms two ways acquisition:

(1) die cast；

(2) cold extrusion shaped；It is closed since the shape of oil groove, sectional area directly influence flow, power of pump core pump oil etc. Key performance parameter, so oil groove needs accurate machining to obtain.

Existing technology machine-shaping groove, using hard alloy screw forming cutter, ditch trough rim will form sharp side, and product exists During subsequent anodization treatment, the easy ablation in sharp side simultaneously falls off, and influences film layer corrosion resistance.

Summary of the invention

Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of automobile pump core part Oil bath processing cutter,

For the prior art there is also the technical issues of, the utility model proposes improvement project have:

1. cutter material is changed to polycrystalline diamond PKD by original hard alloy；

2. increasing the angle R according to specific oil groove shape, depth in the production of PKD blade, oil groove being worked into required depth Chamfered is carried out to the groove angle on both sides, sharp side is avoided to remain, the adverse effect after eliminating anodization.

Technical solution: to achieve the above objectives, the present invention adopts the following technical solutions:

A kind of automobile pump core part oil bath processing cutter, including the cutter head and hard alloy knife bar being welded and fixed, the knife Head is PKD blade, prepares oil groove for rotary cutting processing；

The PKD blade is successively made of planar section, 1/4 arc section and chamfering section from bottom to end, wherein described flat Face section is outer to be cut in 1/4 arc section, and the sum of the radius of 1/4 arc section and the chamfering length of the chamfering section are equal to cutting for oil groove Depth is cut, and the chamfering section is inner chamfer setting, chamfering is 30 °~60 °.

Further, the chamfering of the chamfering section is 45 °.

Further, the cutter head is inclined between central axes and the center of circle of 1/4 arc section with setting substantially symmetrical about its central axis Heart distance is the length of planar section, no more than the 1/4 of the diameter of the cutter.

Further, the chamfering length is the 1/10~1/5 of cutting depth.

Further, the diameter phi of 1/4 arc section is 5~20 times of the chamfering length.

Further, 1/4 arc section and chamfering section are circumscribed, the tie point that point of contact is two sections.

The utility model has the advantages that a kind of automobile pump core part oil bath processing cutter of the utility model has compared with prior art Following advantage: after oil groove processes, trough rim and upper surface are seamlessly transitted, and have maximally reduced the bad shadow in anodization It rings, improves properties of product requirement.

Detailed description of the invention

Fig. 1 is oil groove chamfered shape contourgraph measured drawing after former tool sharpening；

Fig. 2 is oil groove chamfered shape contourgraph measured drawing after improvement of cutter processing；

Fig. 3 is PKD Tool Design schematic diagram.

Specific embodiment

The utility model is further described with reference to the accompanying drawings and examples.

PKD blade is processed working principle of the utility model is: copy to oil groove shape, blade is welded on hard In alloy cutter bar, rotary cutting is carried out；

Each component composition and relationship:

A kind of automobile pump core part oil bath processing cutter, as shown in figure 3, including the cutter head and carbide cutter tool being welded and fixed Bar, the cutter head are PKD blade, match with the oil groove shape of cutting to be processed, prepare oil groove for rotary cutting processing；

Preferably, in some embodiments, the chamfering of the chamfering section is 45 °.

In Fig. 3, side R and bottom R refer to herein be fillet, and size is limited without specific, set according to product demand.

Specific cutting depth, chamfering length, cutter diameter, there are also parameters such as the eccentric distances of knife bar and blade circular arc, It is not particularly limited, value is the relevant parameter determination according to corresponding product and customizes cutter.

Preferably, in some embodiments, the cutter head is with setting substantially symmetrical about its central axis, central axes and 1/4 arc section The center of circle between eccentric distance be planar section length, no more than the 1/4 of the diameter of the cutter.

Preferably, in some embodiments, the chamfering length is the 1/10~1/5 of cutting depth.

Preferably, in some embodiments, the diameter phi of 1/4 arc section is 5~20 times of the chamfering length.

Embodiment

The cutter of cutter and the utility model to the prior art carries out oil groove machining respectively, achievement comparison such as Fig. 1, Shown in 2.

As shown in Figure 1, oil groove made from cutter used in the prior art, it is seen that: trough rim and end face point side.

As shown in Fig. 2, having the oil groove of chamfering made from the cutter used using the utility model, it is seen that: trough rim and end Face uses the round and smooth connection that smoothly transits of chamfering, without sharp side.

After oil groove processes, trough rim and upper surface are seamlessly transitted, and have maximally reduced the adverse effect in anodization, Improve properties of product requirement.

The above is only the preferred embodiment of the utility model, it should be pointed out that: for the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and Retouching also should be regarded as the protection scope of the utility model.

Claims

1. a kind of automobile pump core part oil bath processing cutter, it is characterised in that: including the cutter head and carbide cutter tool being welded and fixed Bar, the cutter head are PKD blade, prepare oil groove for rotary cutting processing；

The PKD blade is successively made of planar section, 1/4 arc section and chamfering section from bottom to end, wherein the planar section It is cut in 1/4 arc section outside, the cutting that the sum of the radius of 1/4 arc section and the chamfering length of the chamfering section are equal to oil groove is deep Degree, and the chamfering section is inner chamfer setting, chamfering is 30 °~60 °.

2. a kind of automobile pump core part oil bath processing cutter according to claim 1, it is characterised in that: the chamfering section Chamfering is 45 °.

3. a kind of automobile pump core part oil bath processing cutter according to claim 1, it is characterised in that: the cutter head is in Mandrel is symmetrical arranged, and the eccentric distance between central axes and the center of circle of 1/4 arc section is the length of planar section, is not more than The 1/4 of the diameter of the cutter.

4. a kind of automobile pump core part oil bath processing cutter according to claim 1, it is characterised in that: the chamfering length It is the 1/10~1/5 of cutting depth.

5. a kind of automobile pump core part oil bath processing cutter according to claim 1, it is characterised in that: 1/4 arc section Diameter phi is 5~20 times of the chamfering length.

6. a kind of automobile pump core part oil bath processing cutter according to claim 1, it is characterised in that: 1/4 circular arc Section is circumscribed with chamfering section, the tie point that point of contact is two sections.